Carpet-cutting machine.



No. 736,644. PATENTBD AUG. 18, 1903. J. SILBERSTBIN.

CARPET CUTTING MACHINE.

N0 MODEL.

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llllnllllllufllll'mh HHHHHHH K fiz lfl witnesses 6 m3 as; Y r I s I l lI NiTnn STATES iatented August 18, 1905.

PATENT OFFICE.

JULIUS SILBERSTEIN, OF CHICAGO, ILLINOIS.-

CARPET-CUTTING MACHINE.

SPECIFICATION formingpart of Letters Patent N 0. 736,644, dated August18, 1903.

Application filed March 15, 1902. Serial No. 93,378. (No model.)

To all whom it may concern.-

Be it known that I, JULIUS SILBERSTEIN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Carpet- Cutting Machine, of which thefollowing is a specification.

This invention relates generally to carpetcutting machines, and moreparticularly to a combined carpet cutter and raveling machine, theobject of the invention being to provide a cheap, simple, and efficientdevice by means of which carpets, preferably of the ingrain type, can becut into strips and the edges of same raveled, therebyproviding suitablestock for weavinginto rugs, it being common to employ this material forthis purpose.

The invention consists also in certain details of construction andnovelties of combination, all of which will be fully describedhereinafter and pointed out in the claims.

In the drawings forming a part of this speei iication,Figure 1 is a sideelevation of a carpetcutting machine constructed inaccordance with myinvention. Fig. 2 is a top plan view of the cutting an d ravelingmechanism. Fi 3 is a side elevation of one of the cutting-disks. Fig.:l: is a detail perspective view showing a portion of one of thecutting-disks and illustrating in detail the opening produced in said.

disks for the purpose of receiving the raveling cutter-blade. Fig. 5 isa detail perspective view of the said cutter, and Fig. 6 is a detailsection view on the line 6 6 of Fig. 4.

In carrying out my invention I employ the main frame A, upon which ismounted the shaft 13, having a pulley B at one end, which is driven bymeans of a belt B passing around the band-wheel B. A series ofcarpet-cutting disks 0 are rigidly mounted upon the shaft B, suitablespacing-collars 0 being employed to hold the disks in proper parallelpositions. Each disk 0 rotates between two fiat parallel bars D, saidbars being arranged in series and secured at their opposite ends to thecross-- pieces D, fixed upon the main frame, and these bars D virtuallyconstituting a slotted bed-plate through which a series of cuttingdisksrotate. It will also be noticed that I employ one disk at each side ofthe series of bars I). A carpet-roll E is mounted at the rear end of theframe, and adjacent thereto are tension'rolls F, through which thecarpet G is passed. Drawing-rolls H are arranged adjacent to the forwardend of the frame, one of said rolls having a sprocket 'at its outer end,driven by a chain II, which passes over another sprocket H which in turnis driven by a chain II, from the hub of the bandwheel 13*.

Each disk 0 is constructed with a double beveled cutting edge 0 for thepurpose of cutting or splitting the carpet as it is drawn from the rollE across the slotted bed-plate by means of the drawing-rolls, thedirection of revolution of the disks being toward the rolls, and inorder to ravel or fray the edges of the carpet-strip I attach a seriesof cutterblades to the said disk, which cutters project laterally fromthe faces of the disk, and thereby serve to cut, fray, or ravel theedges of the strip. These cutter-blades may be connected to the disks inany suitable manner, but in practice I prefer to connect them in themanner illustrated in Figs. 3, 4, 5, and 6, and by reference to saidfigures-it will be noted that I produce four openings I in the saiddisk, said openings being essentially rectangular in form and providedwith inwardly-projecting guides I. at their outer ends, said guidesbeing beveled, as shown.

The cutter-blade K has a shank K in the form of a rectangular block,whichis of such size-and shape as to fit the inner end of the opening I,and the said edges of the shank K are grooved, as shown at K to receivethe inwardly-projecting guides I, and the shank K" and the guides I areprovided with registerin g openings K and 1 through which fastening pinsor bolts K can be passed for the purpose of securely fastening thecutterblades to the disk. In practice I prefer to arrange thesecutting-blades alternately in opposite directions-that is, one bladeprojects laterally from one. side of the disk, while the next adjacentblade will project laterally from the opposite side of the disk. Thebars D are provided with notches D so as to permit the revolution of thecutter-blades.

In operation the carpet to be out and raveled is placed upon the roll E,passed between the rolls F and against and passes the disks 0, and thenbetween the drawing-rolls II. The band-wheel I3 is then rotated so as torotate the disks at about SlX hundred revolutions per minute, and thecarpet being forcibly drawn against the cutting edges of the said diskby action of the drawing-rolls the carpet will be quickly and easily cutinto a series of longitudinal strips, and inasmuch as fourcutting-blades are brought into contact with the edges of the carpetduring each rotation of said disk it is obvious that the edges of thecarpet-strips will be frayed or raveled, thereby providing a superiorarticle of stock for weaving into rugs.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent of the United States, is

1. A machine for cutting and raveling carpets, consisting of one or morerotary disks constructed with smooth cutting edges and having one ormore laterally-projecting cutter-blades, together with means forbringing the carpet into engagement with the said disk, as specified. V

2. A machine for cutting and raveling carpets comprising one or morerotary disks constructed with smooth cutting edges and having aplurality of oppositely-disposed laterally-projecting cutter-blades, theslotted bedplate through which the disks rotate, and

means for moving the carpetinto engagement with the said disks for thepurpose specified.

3. A carpet cutting and raveling machine, comprising a main frame, acarpet-supporting roll at one end, tension-rolls adjacent thereto, andthe drawing-rolls arranged adjacent to the opposite end of the mainframe, a slotted bed plate arranged between the drawing and tensionrolls, and a plurality of cutting-disks mounted upon the main framebetween the said rolls and working in the slotted bed-plate, each diskbeing constructed with the cutting edge and provided withlaterally-projecting cuttingblades, substantially as specified.

4E. The combination with a rotary cuttingdisk having openings producedtherein, of the laterally-projecting cutter-blades having shanksarranged and secured within the openings produced in the disk, a slottedbed-plate in which said disk is mounted and transverse intersectingslots adapted to permit the passage of the laterally-projectingcutter-blades, substantially as specified.

JULIUS SILBERSTEIN. Witnesses: WALTER VON Simon, J. O. J OHNS'PONE.

